作者:Iman Nezam、Lars Peereboom、Dennis J. Miller
DOI:10.1021/acs.oprd.7b00047
日期:2017.5.19
for producing acrylates in high yield from lactic acid-derived 2-acetoxypropanoic acid (APA) esters are presented. An acrylate ester yield of 75% is achieved from methyl and benzyl APA esters at 550 °C in a fixed bed reactor filled with nonporous silica particles, carbon dioxide as a diluent gas, and acetic acid as a co-feed with the APA ester. The yield from methyl and benzyl APA esters is remarkably
提出了由乳酸衍生的2-乙酰氧基丙酸(APA)酯以高产率生产丙烯酸酯的反应条件和反应器几何形状。在充满无孔二氧化硅颗粒,二氧化碳作为稀释气体,以及乙酸与APA酯共同进料的固定床反应器中,在550°C下,甲基和苄基APA酯的丙烯酸酯和苄基APA酯的收率达到75%。甲基和苄基APA酯的收率明显高于APA的乙基或丁酯,后者在酯官能团的β-碳上具有氢原子,因此可以消除烯烃,从而降低丙烯酸酯的收率。在最佳条件下,APA向丙烯酸酯的转化在连续运行30小时内稳定,几乎没有碳沉积在接触材料上。